I am developing SpriteKit universal iOS application that will contain many spritekit images. I was wondering if there are better methods for working with large amount of data images in iOS apps from what's available as default from Apple (i.e. texture atlases or image assets). Some resources point out that working with a database, like SQL, to save and load images data to/from a disk, improves the overall app performance in terms of memory resources.
What is the really best way to manage images content in the iOS application?